Parameter Details
2
2.9 L: Protection Functions
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING 397
1 : Proportional & Integral control
The torque limit function always uses integral control. Use this setting when a very accurate torque limit is necessary
during speed changes, for example in winding machine applications.
If you make the torque limit the most important, it can:
• Increase the acceleration and deceleration times.
• Not let the motor speed reach the frequency reference value during run at constant speed.
■ L7-16: Torque Limit Process at Start
No.
(Hex.)
Name Description
Default
(Range)
L7-16
(044D)
Torque Limit Process at Start
Assigns a time filter to allow the torque limit to build at start.
1
(0, 1)
0 : Disabled
There is torque limit at start without a delay time.
Use this setting to maximize the response time when sudden acceleration or deceleration at start is necessary.
1 : Enabled
There is a delay time of 64 ms at start to build the torque limit.
◆ L8: Drive Protection
L8 parameters set protective functions that prevent faults such as overheating, phase loss, and ground faults.
■ L8-01: 3% ERF DB Resistor Protection
No.
(Hex.)
Name Description
Default
(Range)
L8-01
(04AD)
3% ERF DB Resistor
Protection
Sets the function to enable braking resistor protection with a Yaskawa ERF series braking resistor
(3% ED) installed on the heatsink.
0
(0, 1)
0 : No
Disables braking resistor protection. Use this setting for dynamic braking options that are not Yaskawa ERF series
braking resistors.
1 : Yes
Enables protection for Yaskawa ERF series braking resistors.
Note:
Set L8-01 = 1 and H2-01 to H2-03 = D [MFDO Function Select = Braking Resistor Fault]. Use a sequence to turn OFF power with MFDO.
■ L8-02: Overheat Alarm Level
No.
(Hex.)
Name Description
Default
(Range)
L8-02
(04AE)
Overheat Alarm Level
Sets the oH detection level in temperature.
Determined by o2-04, C6-01
(50 - 150 °C)
If the heatsink temperature is more than the temperature set in this parameter, the drive detects an overheat pre-alarm.
To enable this function, set one of H2-01 to H2-03 [MFDO Function Select] to 20 [Drive Overheat Pre-Alarm (oH)].
If the temperature increases to the overheat fault level, the drive will trigger an oH1 [Heatsink Overheat] fault and
stop operation.
■ L8-03: Overheat Pre-Alarm Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-03
(04AF)
Overheat Pre-Alarm
Selection
Sets operation after the drive detects an oH alarm.
3
(0 - 4)
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